These are 3′ ultra thin jewel boxes. They measure 3.7′ x3.5′ x 0.2′ (a.k.a. 93.98mm x 88.89mm x 5.2mm). These are very thin jewel cases that have the tray built into them. They are clear with a frosted clear back. They are perfect for storing your mini-disc CDs, DVDs, or Gamecube games! THESE WILL NOT HOLD A REGULAR 5′ CD, THEY ARE FOR 3′ MINI-DISCS!!